Buffing pad oe



(,No Model.) l

A. E. PERRY.

BUFFING- PAD 0R APPLANGE.

No. 538,828. Patented Peb. 5, 1895.

ll-11kg. ai 0 UNiTnD STATES Farrar. urine.

AUSTIN E. PERRY, OF WAKEFIELD, ASSIGNOR OF ONE-HALF TO WILLIAM GORDON, OF BOSTON, MASSACHUSETTS.

BUFFING PAD OR PPLIANCE.

SPECIFICATION forming part of Letters Patent No. 533,828, dated February 5, 1895.

Application led November 30, 1894. Serial No, 530,325. (No model.)

To all whom t 11mg/ concern.-

Be it known that I, AUSTIN E. PERRY, of Wakefield, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Buing Pads or Appliances, of which the following is a specification.

`This invention relates to birding-pads or appliances in which a pad of elastic or yielding nature is mounted on a shank or spindle the axis of which extends substantially at right angles with the supporting face of the pad, a pad-cover being employed having an abrasive outer surface and adapted to be supported by the yielding portion of the pad, the arrangement being such that the abrasive face of the pad-cover rotates in a plane substantially at right angles to the axis of. rotation of the shank.

My invention has for its object to provide an improved construction of pad and padcover having in view the attachment of the pad-cover at its central portion to the corresponding portion of the pad.

The invention consists in the improvements which I will new proceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,-Figure 1 represents a View of the blank from which my improved pad-cover is made. Fig. 2 represents a perspective view of my improved pad-cover. Fig. 3 represents a sectional View showing one form of pad and pad-cover embodying my invention. Fig. Il represents a similar view showing the pad constructed to be intlated. Fig. 5 represents a sectional view ot' a modied form of the pad.

The same letters of reference indicate the same parts in all the tigures.

In carrying out my invention, I make a padcover a by cutting a series of radial slits in the central portion of a tlat disk of material suitable for a pad-cover, said material being, for example, the emery-cloth of commerce and therefore having an abrasive coating upon one side. The slits are preferably radially formed and convert the central portion of the blank into a series of pointed tongues a. These tongues are bent upwardly from the back side of the pad, namely, the

side opposite that which has the abrasive coating, so that the tongues stand substantially at right angles with the body of the pad, and project fromvthe back side thereof, as shown in Fig. 2, the completed pad having therefore a centra-l opening and a series of tongues integral With the body of the pad, said tongues surrounding the opening and projecting from the back side ofthe pad. The pad thus constructed is adapted for use with a pad-holder having a central seat or cavity formed to bear upon the outer surfaces of the tongues and to cci-operate with a plug or clamping member insertible in said cavity,

`the Wall of the cavity forming one clamping memberand the plug another clamping inember, between which the tongues are firmly ciamped, so that the pad-cover is securely attached to the pad at its central portion.

In Fig. 3, I show a simple form of pad having the clamping members above mentioned. In said figure, b represents the rigid portion which supports the pad or yielding portion on'which the pad-cover directly bears. For the sake of convenience, I will. call the portion b the pad-holder, the same having at one end a cavity b' which is preferably slightly tapering and larger at its outer than at its in-l ner end, said cavity being formed to receive the series of tongues a. b2 represents an outwardly projecting ilange which supports a cushion b3 of felt or other suitable yielding material said cushion being of annular form and surrounding the portion of the rigid body that contains the cavity b. c represents a plug or clamping member formed to enter the cavity b and to bear upon' the inner sides of the tongues a. Said plug is formed to co-operate with the Walls of said cavity in tightly grasping or clamping the tongues, and it may be secured to the body of the pad by any suitable means, such as by a screw d. The tongues a are made of such length and the cavity b of such depth, that the portions of the tongues which are held by the said clamping members are located sufficiently far above the acting face of the pad-cover so that there will be no liability of contact between the clamping member c and the boot or shoe sole or other article presented to the pad-cover.

In Fig. 4, I shcwa pad adapted to be cush- IOO e vasaefas diaphragm formed to support the acting portion ofthe pad-cover and having an in- ,Wardly projecting flange g formed to bear upon the upper side of the flange e', and an upwardly projecting yflange g2 formed to entera recess e2 formed in the body or rigid portion of the pad. The iange g is secured to the holder e by means of a clamping ringfvl, and the lange g2 is secured within the cavity e2 by means of a Vclamping sleeve or ringj,

the latter being screw-threaded and engaged with an internal thread in the holder e. The inner surface of the clamping ring j consti- Vtutes one yof the tongue-clamping members, the other member being a plug or collar 7.o loosely mounted ona screw 7.5 which is engaged with a threaded orifice in the holder e. Air is admitted into the space between the diaphragm g and the flange e through one or more ducts o which may receive air through aduct in the spindle, said ductcommuuicating with an air pump which may be continu- Y ously operated by the'power ofk the machine to which the pad is applied, or it preferred, the duct o may be supplied with air at intervals as may be required by meansof a detachable air pump, suitable means being employed to retain in the diaphragm a charge of air that may be pumped into it.

Itwill be seen that in the construction shown in Fig. 4: the pad cover is held in the same manner as in the construction shown in Fig. 3, the pad cover being the same in both cases.

In Fig. 5 I show an air duct o3 extended to the outer surface of the holder e and provided with a tting o to which an air pump may be applied, so that the cushion may be inflated like the tire of a bicycle and without removing it from the machine, a suitable Valve o2, such as that used with pneumatic tires, being employed to prevent the escape of air from the cushion through the duct.

I claim- 1. A bufIing-pad cover composed ot a disk of flexible material such as emery cloth having an abrasive coating on oneY side, a central opening, and a series of tongues integral with lthe pad cover, said tongues projecting from the back of the cover and surrounding they opening.

2. Abufting-pad comprising a holder having a central tongue-receiving recess the wall movable `clamping member co-ope'rating with said Wall, and an annular yielding cushion surrounding said recess and projecting below the same whereby the pad is enabled to support the acting face of an abrasive cover below said clamping members. l

3. `In a butng-pad, the combination of a holder having clamping members at its central portion,an annularcushion surrounding the clamping members and projecting below the same, and a pad having a series of tongues projecting inwardly through thecushion and confined between the said clamping members.

LA buftingpad comprising a flanged holder having an air duct and a central cav- 6o of which constitutes a clamping member, ak

ity, an annular diaphragm having a ange t formed'to extend over the iiangeof thek holderand another flange formed to enter the cavity of the holder,clamping rings or collars i 7' for securing the flanges of the diaphragm to the holder, said collar j having itsy inner surface formed to serve as a tongueclamping member, and a tongue-clamping plug `formed to co-operate with the collar jlin clamping central tongues onk a pad cover.

5. A bufting-pad comprising a rigid holder having an air duct, an annular diaphragm secured to the holder and forming an annular air chamber communicating with said duct, and pad-clamping members located within the annulus ot the diaphragm.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 21st day of November, A. D. 1894.

AUSTIN E. PERRY.

Witnesses:

A. D. HARRISON, ROLLIN ABELL. 

